Improvement in grinding-mills



4Sheets-Sheet 1.

A. H. WAGNER. Grinding-Mill.

NO. 197,985. Patented Dec. ",1877.

4 Sheets-Sheet 2.

A. H. WAGNER. Grinding-Mill.

No. 197,985. P1tehted Dec. 11,1877.

Il J m 9 u I By luis .dtforney,

4 Sheets-Sheet 3.

e A.H.WAGNER. Grinding-Mill.

No. 197,985.' Patented Dec. 11, 1877 UNITED STATES PATENT OFFICE.

7 AUSBERT H. WAGNER, OF GHIGAGO, ILLINOIS, ASSIGNOR T0 ANNA Gr.

' WAGNER, OF SAME PLACE.

IMPROVEMENT IN GRl'NDING-MILLS.

Specification forming part of Letters Patent No. 197,985, dated December11, 1877 application fild September 27, 1877.

' serve its proper relative position in the casing,

Whether it be in a vertical or horizontal position, which end I attainby monnting the driving-spindle, the inner end of which is connectedrigidly With the stone, in a long pipeb0X bearing, rigidly secured toand projecting from thecasing, the outer end of which bearing isprovided With a flattened recessed portion for the reception of adriving-pnfleykeyed npon the spindle.

The obj ect of the next part of my invention is to enable the casing andgrindstones to be readily converted froin a vertical to a horizontalposition, or vice versa, which end I attain by means of a main frame, inuprights of which the casing is jonrnaled, said framebe- 'ing providedWith a hinged ar1n, to support theonter end of the spindlebox when thecasing and stones tre in a vertical position, and With arest beneath thesuspended casing,

to secure the spindlebox whenthe stones are in a horizontal position.

The object of the next part of my invention is to provide a feedingapparatns, adapted to be placed in different positions on the casing, soas properly to feed the mill when used either as a vertical orhorizontal one, which end I attain in the manner and by the meanshercinafter specifi0ally set forth.

The next part of mydnvention relates to the stationary or bed stone. Itsobject is to allow r the stone to yield t0 accommodate itself to thernnning stone, and also render it adjnstable in relation to said stone,in'order to grind fine or coarse, which ends I attain in the manner andbythe means hereinafter specificafly set forth. In the accompanyingdrawings, which show all my improvements as embodied in one machine inthe best way now known to me, Figure 1 is a view of my improvedgrinding-mill as seen from the rear; Fig. 2, a vertical central sectiontherethrough on the line 1' 1 of Fig.; 1; Fig. 3, a horizontal sectiontherethrough on the line 2 2 of Fig. 1; Fig. 4, a top or plan vieW ofthe bedstone and its adjusting device, part'of the stone being brokenaway to show the mechanism beneath; and Fig. 5 represents a view inelevation, partly in section, of my improvements converted into a millthe faces of the stones of which are in a plane substantiaflyhorizontal, all the precedin g figures representing a mill in which thefaces of the stones are in a vertical plane.

The main fra1ne A, which is preferably of cast-iron, is provided withtwo nprights or standards, A a cross-piece, -A and with a hinged arm orprop, A

' The casing of the mill is divided circ'nmferentiallyinto two sections,B B, hinged togetherat I), and adapted, when closed, to be locked by theswinging bolt and thumbnnt I). The casing is suspended by trunnions orjournals b projecting from the periphery of section B, Which have theirbearings in snitable boxes in the upper ends of the uprights A by whichmeans the casing and grindstones m0nnted therein can turn freely.

The stationary or bed stone 0 of the mill is supported in section B ofthe casing by its adjnsting mechanism, and the rnnning stone D issupported in section B by its driving spindle or shaft E, on the end ofWhich it is fimnly keyed. This spindle is mounted in a long pipe-boxbearing,F, rigidly secnred to and projecting from the section B, whichbearing is provided ncar its outer end with a flattened recessedportion, f, across Which recess the spindle extends, and has its extremeend j ournaled in a continuation of the tubnlar por tion of thepipe-bearing. A driVing-pnlley, F,

keyed npon the spindle is rriounted in the re cess f, thereby preventingendwise movement of the spindle in its bearing, and enabling me to drivethe rnnning stone steadily, and preserve its relative position in thecasing.

The inner end of the pipe-bettring, where it with its yielding capacityon its pivots.

The eyebolts G are provided with inclines or cana-surfaces g,corresponding with similar surfaces or flanges t on a plate, I, mountedin the casing, and turning around the central hnb or bushing H beneaththe stone. The shanks of the bolts pass through slots i in thetuming-plate between the inclined fianges, and through apertures in thecasing, and are provided on the outside of the casing With springs orwashers g,- preferably of rubber, which are confined in place and theirtension regulated by screw-nuts g. The plate I is turned upon its axis,to cause its inclines to act upon those of the bolts, in order to adjustthe stone, by means of a screwrod, J, pivoted to the plate, andprojecting through the casing, upon the threads of which rod, outsidethe casing, is placed a suitable thumb wheel or crank.

By the rotation of this wheel upon the rod J, and against the casing,the cam-plate I is turned upon its axis, causing its inclines to rideunder the inclined surfaces of the bolts, forcing them inward againstthe tension of their springs or washers, and adjusting the stone, thesprings serving to retain the bolts steadily and firmly in theiradjusted position.

It Will thus be seen that the bed-stone can be adjusted in relation tothe running stone With the greatest accnraey, and from the outside ofthe casing, in a convenient manner, whereby I am enabled to grind fineor coarse, at pleasure.

The feeding apparatus consists of a hopper, L, supported by abracket-frame, M, detachably secured to the casing by any suitablemeans. Beneath the hopper is a shoe, N, pivoted upon the end of apivoted, forked, vibrating lever, 0, the forks of which extend nponopposite sides of the pipe-box bearing, and are provided With pins 0,which pass through apertnres in said bearing, and are operated upon by acam-surface, 6, on the driving-spindle E, bywhich means the shge isgiven a shaking motion for a wellknown purpose. The shoe empties into afunnel, P, inserted in the mouth of the feed-pipe Q, leading to the hubor bushing H and eye of the stone.

The feed is regulated by adjusting the inclination of the shoerelatively to the funnel in a well-known way.

To couvert the mill from a vertical position,

as shown in Figs. 1 to 4, inclusive, of the drawnals, clown into therecess or rest a in the crosspiece A of the main frame, where it may besecured by the same means that held it to the prop, shown in the presentinstance as consisting of two set-screws. Then detach the hopper-framefrom its position upon the circumferential periphery of the casing, andattach it to the curved plate m upon the now upper side of the casing,and insert the funnel into the opening b in the casing directly abovethe hub or bushing H, and leading to the eye of the stone. paratusnecessitates the employment of an additional vibrating lever, 0, toshake the shoe, one end of this secondary lever being connected with theforked lever 0, and the other pivoted to and supporting the rear end ofthe shoe.

The issuing spout or nozzle B is secured between the sections of thecasing in such a manner that it can be turned to accommodate the changesin position of the casing and stones.

When the mill is in a horizontal position, the sections of the casingmay be opened and laid back for conVeniently dressing the faces of thestones.

The many advantages of my improvements Will be appreciated by thoseskilled in the art;

I claim as 1ny invention- 1. The combination, substantially ashereinbefore set forth, in a convertible grinding-mill, of the frame,the casing surrounding the stones journaled therein, the long pipe-boxbearing rigidly secured to the casing and provided at its outer end witha recessed portion for the reception of a driving pulley, the spindlemounted in said bearing and driven by the pulley, and the running stonerigidly fixed upon the-inner end of the spindle, whereby the stone runssteadily and preserves its proper relative position in the casing,whether the driving-shaft is secured in a vertical or horizontalposition in the frame.

2. A cast-metal main frame for convertible grinding-mills, constructedsubstantially as described, provided with a hinged arm or prop adaptedtosupport the driving-shaft of the mill in a horizontal position. 7

3. The combination, substantially as herein before set forth, of themain frame provided .with the cross-piece A 'and arm or prop A thecasing: in which the stones are mounted journaled in said frame, and thedriving-shaft, whereby the casing may be rocked upon its jonrnals tocouvert the mill from a horizontal to a vertical one, or vice versa, andthe shaft be securely held in 'either position.

4. The combination, substantiafly as hereinbefore set forth, of thecasing, hung upon trun- This transfer of the feeding apnions andprovided with tWo feed-openings,

.or washers encircling the bolts outside the casing, and the r0d foroperafing the turningplate to adjust the stone, whereby t-he stone maybe adjusd toward or from the running stone, and is free to yield t0conform thereco. In testimony whereof I have hereunto sub scribed myname.

AUSBERT H. WAGNER.

Witnesses:

W. H. GREGORY, WM. J. PEYTON.

